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Synthesis of Phenylsubstituted 2H,5H-Pyrano[ 4,3-b] pyran-5-ones and Related Heterocycles via a Domino Knoevenagel Condensation/ 6π-Electron Electrocyclization of 4-Hydroxy-6-phenyl-2H-pyran-2-one with Cyclic and Acyclic α, β-Unsaturated Aldehydes under Different Conditions Synthesis and Crystal Structure of the High-pressure Iron Borate β-FeB2O4 Synthesis and Crystal Structure of the High-pressure Iron Borate β-FeB2O4 Synthesis and Crystal Structure of the High-pressure Iron Borate β-FeB2O4 Synthesis and Crystal Structure of the High-pressure Iron Borate β-FeB2O4 Synthesis and Crystal Structure of the High-pressure Iron Borate β-FeB2O4

Autor: Heiko Leutbecher, Sylvia Rieg, Jürgen Conrad, Sabine Mika, Iris Klaiber, Uwe Beifuss

Publikováno v: Zeitschrift für Naturforschung B. 64:1-10

A range of new 7-phenyl-2H,5H-pyrano[4,3-b]pyran-5-ones and related tricyclic heterocycles was prepared in a single step by means of a domino Knoevenagel condensation/6π-electron electrocyclization under different reaction conditions, including ther

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b75412487be5cce6ef4244987b27322f
https://doi.org/10.1515/znb-2009-0801

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ChemInform Abstract: Synthesis of Phenyl-Substituted 2H,5H-Pyrano[4,3-b]pyran-5-ones and Related Heterocycles via a Domino Knoevenagel Condensation/6Ï-Electron Electrocyclization of 4-Hydroxy-6-phenyl-2H-pyran-2-one with Cyclic and Acyclic Î±,Î²-Unsaturated

Autor: Juergen Conrad, Sabine Mika, Uwe Beifuss, Iris Klaiber, Heiko Leutbecher, Sylvia Rieg

Publikováno v: ChemInform. 41

Microwave-assisted syntheses are a particularly attractive alternative to syntheses under thermal conditions since they often proceed much faster and deliver productswith higher yields and higher purity [1]. Upon conventional heating using an externa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a7c21e82939ed0af2fe9a47fa24e539
https://doi.org/10.1002/chin.201001147

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